
Multiplying Decimals
Presentation
•
Mathematics
•
4th - 6th Grade
•
Medium
Standards-aligned
HALEY CONROY
Used 74+ times
FREE Resource
10 Slides • 10 Questions
1
Today I am learning that place value is used to determine decimal location.
Hoy estoy aprendiendo que el valor de la plaza se utiliza para determinar la unicación decimal.
2
Get a note catcher from the front. Look through the next few slides. Fill in the note catcher as you learn.
Obtenga un receptor de notas desde el frente. Mire las siguientes diapositivas. Complete el receptor de notas a medida que aprende.
3
Take notes about estimation - Tome notas sobre la estimación.
Take notes about strategies - Tome notas sobre estrategias.
Answer all questions - Responde a toda preguntas.
4
5
Repeated Addition - Suma repetidamente
Picture or visual
Multiplication means groups - La multiplicación significa grupos.
.21
.21
+ .21
.63
Repeated Addition
6
7
Think of the numbers as words - Piense en los números como palabras
2 x 3 hundredths = 6 hundredths
3 tenths x 4 tenths = 12 hundredths
What would you call this strategy? - ¿Cómo llamarías a esta estrategia?
Tenths
Tenths
Hundredths
Think of place value words!
.3 x .4 = ?
3 tenths x 4 tenths = 12 hundredths
.3 x .4 = .12
8
Multiple Choice
Using .4 ×.03 = .012 Choose which of these answers correctly uses place value vocabulary.
4 tenths times 3 tenths equals 12 tenths
4 tenths times 3 hundredths equals 12 hundredths
4 times 3 equals 12
4 tenths times 3 hundredths equals 12 thousandths
9
Use a visual to show the multiplication. Usa una visual para representar la multiplicación.
What would you call this strategy? - ¿Cómo llamarias a esta estrategia?
.2
.1
10
Multiple Select
Which two images correctly show the equation 1.2 x .6?
11
Convert numbers into fractions - Convertir los números a fracciones.
Multiply across - Múltiples fracciones.
Convert to decimal - Convertir de nuevo a los decimales.
Turn the decimal into a fraction
.8 to 8/10
.2 to 2/10
Multiply across the fractions
8/10 x 2/10 = 16/100
Turn the fraction back into a decimal
16/100 to .16
12
Multiple Choice
Which of the following correctly converts 1.2 x .03 to fractions?
10012×1003=10,00036
1012×1003=1,00036
112×1003=10036
1012×103=10036
13
Poll
Which of the previous strategies do you plan on using when multiplying decimals? - ¿Cuál de las estrategias anteriores planeas usar cuando multiplican decimales?
Strategy 1 - Repeated Addition
Strategy 2 - Words
Strategy 3 - Picture/Visual
Strategy 4 - Write as fractions
14
15
Multiple Choice
7×5=35, so 7×.5 = ?
35
.35
3.5
28
16
Multiple Choice
12×4=48, so .12×4=?
.16 (16 hundredths)
.48 (48 hundredths)
4.8 (48 tenths)
48 (48 wholes)
17
Multiple Choice
8×4=32, so .08×.4=?
32 (32 wholes)
3.2 (32 tenths)
.32 (32 hundredths)
.032 (32 thousandths)
18
Multiple Choice
60×3=180, so 60×.3=?
18.0
1.80
.180
.018
19
Open Ended
Solve.
9×.04=
20
Poll
How are you feeling about multiplying decimals?
I am still confused.
I think I get it.
I'm feeling confident.
Today I am learning that place value is used to determine decimal location.
Hoy estoy aprendiendo que el valor de la plaza se utiliza para determinar la unicación decimal.
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